Graphics and resolution settings won't set right

Hello everyone,

My problem with playing with this client is that I can't play flyff on maximum settings. (I can with official)
The 1920x1080 resolution still gets rendered like 800x600 and the textures and all other settings are lowered.

I get this issue: "Due to insufficient texture memory, the quality of the texture will be lowered."

I've tried looking for a solution on Google, but this bug doesn't really seem to have a fix.. maybe some one here know how to fix it?